Back spotfacing system and method

An automated back spotfacing system comprising:

• a machining apparatus comprising:
• a through-hole cutter tool attached to the machining apparatus, the through-hole cutter tool comprising:
• an elongate member being movable to coaxially extend through a hole in a workpiece from a first side of the workpiece, the workpiece being coupled to the machining apparatus;
• a cutter element pivotal between a stowed position on the elongate member, a contact position with an inner surface of the hole, and an extended position disengaged from the inner surface and extending radially from the elongate member, the cutter element configured for obtaining internal probe measurements when the cutter element disengages from the inner surface and configured for obtaining external probe measurements when the cutter element is in the extended position, and configured to cut and back spotface a surface on a second side of the workpiece opposite the first side;
• a feed axis member coupled to the elongate member and configured to extend and retract the elongate member through the hole of the workpiece;
• an elongated rotating member coupled to the elongate member and configured to rotate the elongate member;
• an elongated drawbar actuated by a drawbar actuator and configured to actuate the cutter element to pivot from the stowed position to the extended position;
• a power system coupled to the machining apparatus for powering the machining apparatus and the through-hole cutter tool;
• and,
• a measurement system coupled to the machining apparatus for measuring the internal probe measurements and measuring the external probe measurements;
• and,
• a measurement analysis system for determining a hole exit profile based on the internal probe measurements, and a surface profile based on the external probe measurements, the measurement analysis system comprising a computer system having a system logic.